Mami has to “extract” a witch’s curse that has lodged in some men. Ten points if you guess how she does it. Ten points if you also guessed that it starts off rapey and ends up with her enjoying it. But THEN, Kyubey reveals that she’s actually not finished, and she’s got lots more men to fuck before she’s done. And the book ends. I would have rather it kept going personally, but it’s still good.